High-Voltage Nanosecond Pulse Generator Based on Non-balanced Blumlein Type Multilayered Microstrip Transmission Line
Mi Yan1, Zhang Yanyuan1, 2, Chu Yi-dao 1, Yao Chen-guo1, Li Cheng-xiang1
1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China 2.Changshou Power Supply Company Chongqing City Power Company of State Grid Chongqing 401220 China
Abstract：For the requirement of the small and compact nanosecond pulse generator in biomedical field, the unbalanced Blumlein type multilayered microstrip transmission lines and the solid-state switching technology are combined to develop a high-voltage nanosecond pulse generator.Wave propagation analysis is used to explain the principle of the system when forming a square wave.Besides, the control timing sequenceof the related solid-state switches and the cutting-offwave strategy are adopted, so as to realize the adjustable 50～100 ns square wave pulse widths.The principle of the variable load impedance inthe unbalanced Blumlein type multilayered microstrip transmission line system is also interpreted.And a small testingsystem is established to testify the performance of the generator.The testing nanosecond pulse generator, with an amplitude of 0～2 kV, pulse width arrange from 50 ns to 100 ns, rising time about 20 ns and repetition frequency of 0～1 kHz, outputs the square pulse on the 50 Ω resistor load.Moreover, the nanosecond pulse voltage output is about twice as the charging voltage when a 500 Ω resistor is used as the load.
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2015, Vol. 30 
